Method GetDefaultTexture

Hydrogent/src/HnMaterial.cpp:366–408

}

HnTextureRegistry::TextureHandleSharedPtr HnMaterial::GetDefaultTexture(HnTextureRegistry& TexRegistry, const pxr::TfToken& Name)
{
    pxr::TfToken DefaultTexName;
    if (Name == HnTokens->diffuseColor ||
        Name == HnTokens->emissiveColor)
    {
        DefaultTexName = HnMaterialPrivateTokens->whiteRgba8;
    }
    else if (Name == HnTokens->normal)
    {
        DefaultTexName = HnTokens->normal;
    }
    else if (Name == HnTokens->metallic ||
             Name == HnTokens->roughness ||
             Name == HnTokens->occlusion)
    {
        DefaultTexName = HnMaterialPrivateTokens->whiteR8;
    }
    else
    {
        UNEXPECTED("Unknown texture name '", Name, "'");
        DefaultTexName = HnMaterialPrivateTokens->blackRgba8;
    }

    const pxr::TfToken DefaultTexPath = GetDefaultTexturePath(DefaultTexName);

    pxr::HdSamplerParameters SamplerParams;
    SamplerParams.wrapS     = pxr::HdWrapRepeat;
    SamplerParams.wrapT     = pxr::HdWrapRepeat;
    SamplerParams.wrapR     = pxr::HdWrapRepeat;
    SamplerParams.minFilter = pxr::HdMinFilterLinearMipmapLinear;
    SamplerParams.magFilter = pxr::HdMagFilterLinear;
    return TexRegistry.Allocate(DefaultTexPath, TextureComponentMapping::Identity(), SamplerParams,
                                [&]() {
                                    RefCntAutoPtr<Image> pImage = CreateDefaultImage(DefaultTexName);

                                    TextureLoadInfo               LoadInfo{Name.GetText()};
                                    RefCntAutoPtr<ITextureLoader> pLoader;
                                    CreateTextureLoaderFromImage(pImage, LoadInfo, &pLoader);
                                    VERIFY_EXPR(pLoader);
                                    return pLoader;
                                });
}

static TEXTURE_FORMAT GetMaterialTextureFormat(const pxr::TfToken& Name)
{